Introduction to Solenoid Valves
True Blue® Solenoid Valves help you stop, allow or redirect flow. Because of the extensive variety of body design and coil combinations available from stock, Plast-O-Matic has a valve to meet both your processing needs and electrical requirements.
Overview of the True Blue Solenoid Valve Line…

Plast-O-Matic offers one wetted core design; the rest are high-performance designs with the patented Fail-Dry safety vent, and absolutely no wetted metals. Most are direct acting, normally-closed. A pilot-operated model offers higher pressures and flows, and one normally-open model is available. The rest are 3-way (also known as diverter valves) or specialty items.
This is a quick introduction, moving from the most basic offering to the most specialized. Immediately below is an overview of Plast-O-Matic’s approach to Solenoid Valve design, followed by capsule descriptions with links to detailed catalog pages.
- Feature rugged thermoplastic construction with no wetted metal parts.
- EAS- Series 2-way, PS Series 2-way, and THP Series 3-way feature the patented Fail Dry safety vent.
- NEMA 4X coils — with DIN connector — available as standard on every valve.
- Z-COOL energy-saving, lighted connector available — standard on W24 Coil.
- Many types of AC and DC coils available for most valves.
- Bodies are machined or molded from top quality brand plastics, including Geon® PVC, Corzan® CPVC, Kynar® PVDF, PTFE, Glass-Filled Polypro, and Natural, unpigmented Polypropylene.
- PTFE bellows designs prevent fugitive emissions.
- Seals standard in FKM and EPDM; optional materials such as Buna nitrile and Kalrez® readily available. Seal material on PTFE bellows design is a specially-treated FKM, so that one valve can handle virtually all liquids.
- Most direct-acting valves rated for full vacuum through pressure.
- Popular models, sizes and materials ship from stock.
- As your assurance of quality, each valve is individually tested under pressure by a Plast-O-Matic inspector prior to shipment.
True Blue Valves are Cost Efficient
When comparing valves, it is important to consider both the operating life, and how easily/costly it is to service the valve. Below is a lifetime cost comparison chart, pitting the Plast-O-Matic True Blue® Series PS against a well known competitive brand…
- The valves compared are 1″ NPT pilot-operated solenoid valves, with PVC bodies and FKM seals. Prices are per catalog, January 2001, and are subject to change.
- The Plast-O-Matic valve has a 9.5 Cv rating with a rated pressure range of 5 – 140 psi.
- The competition’s valve has a 10.3 Cv rating with a rated pressure range of 7 – 85 psi.
- Plast-O-Matic recommends inspection at 1,000,000 cycles. Assuming a rebuild kit is required — and it may not be — the valve can be returned to like-new condition in a few minutes, without any special training. Cost of the rebuild kit is $155.
- The competitor states: “The valve will last 200,000 to 500,000 cycles, at which point we recommend buying a new valve, because the rebuild kit is virtually the entire valve and costs approximately the same.”
- Even when competitive valves are priced hundreds of dollars lower, Plast-O-Matic users still come out way ahead in terms of cost per cycle. For example, if the initial cost of the other valve were $174, the total life cycle cost in this comparison would still be $166 more than Plast-O-Matic…not to mention the staggering cost of multiple downtimes.
Series EAST:
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Please click here for complete specifications (a web page specific to Series EAST) |
Series EASMT & EASYMT:
Series EASMT: ½”, ¾” & 1″ Designed for high flows and relatively high pressures.
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Please click here for complete specifications (a web page specific to Series EASMT & EASYMT) |
Series PS:
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Please click here for complete specifications (a web page specific to Series PS) |
Series EASY-NO (NORMALLY OPEN):
Million-cycle, bubble-tight shutoff, with no metal parts in wetted area. Design features a non-sticking PTFE shaft with a 4 u-cup seal, plus upper seal with Fail Dry safety vent. Suitable for most solutions, although proper caution should be taken when specifying for liquids prone to crystallization because of the u-cup design.
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Please click here for complete specifications (a web page specific to Series EASY-N.O.) |
Series THP 3-way design:
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Please click here for complete specifications (a web page specific to Series THP) |